The only number that matters: entropy

A password's strength is measured in bits of entropy, roughly log₂(characterset_size ^ length). A 12-character password drawn from 94 possible characters (upper, lower, digits, symbols) has about 78 bits of entropy. At that level, even a planet-sized cluster of computers would need longer than the age of the universe to brute-force it. The Benditools password generator lets you push length up — and length is the cheapest strength you can buy.

Length beats complexity, every time

People obsess over "must include a symbol," but adding one symbol barely moves entropy, while adding four more random characters multiplies the search space enormously. "Tr0ub4dour&3" (a famous XKCD example) looks strong but is only 11 characters from a small pattern — breakable. "correct horse battery staple" is longer, all lowercase, and vastly harder to crack because its length and randomness dominate. Prefer a long passphrase of random words over a short "clever" string.

Why randomness must be real

Entropy only counts if the selection is genuinely random. A password based on a birthday, a pet's name, or "Password1!" has near-zero entropy to an attacker who knows you. The generator must draw from a cryptographically secure random source (a CSPRNG), not a predictable math.random(). For anything sensitive, let the tool pick — do not "improve" it by typing your own.

The habit that prevents most breaches: never reuse

The majority of real-world account takeovers are not brute force at all — they are credential stuffing. One company gets breached, the email/password pair leaks, and attackers try it on a thousand other sites. If you reused that password anywhere, those accounts fall too. Unique passwords per site is the single highest-leverage habit; a password manager makes it painless.

A practical setup

Strength is not about being clever; it is about length, randomness, and uniqueness. Get those three and you are ahead of 99% of accounts.